We really enjoy the convenience of breakfast in the CL lounge. For us, it's much nicer than fighting the crowds at a counter service or table service restaurant. We also like wine or beer and appetizers in the evening. Years ago, on our first stay at GF, we received a complimentary upgrade to main building club level. We really enjoyed it and have stayed club level ever since (I guess Disney knew what they were doing when they upgraded us).
We loved AKL CL when we stayed there. It has been a few years, though, so opinions of those who have stayed more recently will be more useful for you.
I don't think I would pay $1400 more for a week in Club Level. But, I would certainly pay $700 more. I figure the four of us easily would spend that $700 on breakfast and snacks each day -- and it won't be as pleasant as eating in the CL lounge.
Personally, I would not do DeluxeDDP and CL. I wouldn't even do regular DDP and CL. That is not to say that the appetizers make a dinner. They don't. (Unlike at PBH at Universal where one can easily make a dinner of the evening offerings.) But, with CL we don't need anything for breakfast. we prefer two table service meals a day for lunch and dinner (often sharing the entree), we rarely eat a counter service meal, and we don't buy snacks. For snacks we enjoy the CL lounge offerings. So DDP doesn't work for us.